Improvement in pumps



AfP. BROWN.

Improvement in Pump-s.

Patented May 2,1871.

ifittzni hffioz;

ADDISON P. BROWN,

or NEW YORK, N. Y.H+

Letters Patent No. 114,403, dated May 2, 1871.

IMPROVEMENT IN PUMPS.

The Schedule referred to in these Letters Patent and making part of thesame.

To all whom it may concern Be it known that I, Anmsou P.-BROWN, of thecity, county, and State of New York, have invented a new and usefulAnti-Freezing Attachment for Cistern and other Pumps; and I do herebydeclare that the following is a full, clear, and exact descriptionthereof, reference being had to the accompanying drawing forming a partof this specification.

This invention consists in a reversible annular plate, which isinterposed between the supply-pipe of the pump'and the-valve, and formsthe seat of the latter, and has formed in it a groove extending from itsinner circumference nearly to its outer.

In winter, when the water in the pump is liable to freeze up andpreventthe operation of the pump, the groove is arranged opposite thehinge of the valve and forms a channel, through which any water whichmay remain in the pump after pumping will run back into the supply-pipeand thereby prevent it from freezing in the pump.

In summer time the plate is reversed, so that the groove has no efi'ectonv the operation of the pump.

Instead of the groove I may find it more convenient to form a hole inthe plate, which shall serve the same end by communicating with theinterior of the supplypipe by a passage formed in its flange, and may bereversed in the same manners In the accompanying drawing- Figure 1 is acentral vertical section of a pump ha"- iug my invention appliedandshowing it in use;

Figure 2 is a similar view, showing the groove turned round under thehinge, whichpositiou it occupies when not in use; and

Figure 3 is a similar view, showing the plate, iu-

stead of being turned around, as being turned upside down, which alsorenders it useless.

Figure 4 is a view of the plate detached from the pump, and A Figure 5is a plan view of the valve and plate.

Similar letters of reference indicate corresponding parts in allthe-fignres.

A represents the pump;

B, the supply-pipe;

V, the valve thereof; and

G, the reversiblc plate which constitutes my invention.

This plate is of-anuular form, and is interposed between the valve andsupply-pipe, and itsinner circumference is of the same radius as thesupplypipe B.

Formed on the plate is a radial groove, 0, which extends from the innercircumference nearly to the outer.

- In cold weather, when the water in pumps is apt to freeze and preventtheir working, the plate is arranged so that its grooved'side isuppermostand the groove is opposite the hinge of the valve, as shown infigs. l and 5. When in this position, as soon as the operation of thepump ceases, all the water left in the pump will run back through thegroove into the supply-pipe and back into the cistern or well, withwhich the pump is in communication.

In summer the plate is reversed either by turning it round to bring thegroove underthe hinge of the valve, as shown in fig. 2, or by turning itupside down,

as represented in fig. 3, in either of which positions it will have noeffect whatever upon the operation of the pump.

Instead of the groove 0 I may provide the plate with a hole, f,represented opposite the groove in fig. 4, and this will necessitate theformat-ion of a passage through or on the flange of the supply-pipe.When the plate is thus made it can only be reversed by turning it roundso that the hole is covered by the hinge of the valve.

\Vhat I claim as my invention, and desire to secure by Letters Patent,is--. l

The reversible plate 0, in. combination with the valve V andsupply-pipe, substantially as and for the purpose herein described.

ADDISON P. BROWN.

Witnesses:

FRED. HAYNES, R. E. RABEAU.

